The mix of language/cultural differences and legal/social uncertainties sometimes makes it hard to know what I need to apply or register for something. Information may not available on websites, sometimes because the answer depends on your personal circumstances, sometimes because the websites are just old or incomplete.
I like sending e-mails. But e-mails are just not taken as seriously; I might wait a week for a response, only to get a curt "That is not possible", which doesn't clarify my situation or point me in the right direction.
If I call, I might have to wait a minute, or I might have to wait an hour. I don't get the freedom to wait that long for a call during work hours, and customer service might not be open late at night. In a phone-call I am also limited by my ability to speak a different language on my feet; I often cannot fully express what I want without some considerable forethought.
An in-person appointment would be good, but that might have to be booked weeks or (during Covid) months in advance. It may require travelling across the country. And I may not even know what I actually need or want from the appointment, so I don't know what supporting documentation etc. to bring.
Live chat solves all these problems. It is asynchronous, so I can stop, think about, and re-read the conversations. Where the language barrier becomes a problem, I can look up definitions. And I get a fast response, which can be followed up with additional questions if my problem is not quite solved. This is much better than waiting days or weeks only to get a non-answer because I asked the wrong question.
Intrusive live chat pop-ups are obnoxious, as are "robot menus", but I love the option to chat live with a human. It has helped me many times.